robbl



iU40 Nudel.)

Flc. I.

H. DE v. noBB.

CONTINUOUS GENTRIFUGAL SEPARATOB.

(Application led Dec. 24, 1897.)

2 Sheets-Sheet I.

Patented'Nov. 22, |898.

No. 6|4,764. H. DE v. noBBl-.

CONTINUUUS CENTRIFUGAL SEPARATDB.

(Application led Dec. 24, 1897.) -No Model.) 2 Sheets-Sheet 2.

Patented Nov. 22, |898..

UNITED STATES PATENT OFFICE.

HER-MAN DE VRIES RODB, OF AlllS'lERDAM, NFYIIERLANDS.

CONTINUOUS CENTRlFUGAL SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 614,764, dated November 22, 1898.

Application tiled December 24, 1897. Serial No. 663,376. (No model.)

To @ZZ whom t may concern: t

13e it known that I, HERMAN DE -VRIEs ROBB, a subject of the Queen of IIolland, residingin Amsterdam, Netherlands, have invented certain new and useful Improvements in Continuous Centrifugal Separators, of which the following is a specification'.

'lhis invention has been patented in Great Britain under date of February 1, 1807, No. 2,597.

This invention relates to centrifugal sepa'-V rators such as are used in the sugar. industry for the purpose of separating the sugar-crystals from the syrup and in which the action is continuous. y

The objects of the invention are to reducey as far as possible the labor of handling the material to be operated upon and to simplify and increase the efficiency of the machine as compared with others of the same class.

lVith these objects in view I arrange the. separator so that the material-to be dried is continuously fed in at the top thereof, passes through the machine in one direction only, and after having been dried passes out through the open bottom of the separator and falls directly into a suitable receptacle. I also provide various means of adjustment, as hereinafter fully described, so that the eilective areas of certain parts may be varied to suit the material to be treated. j

The accompanying drawings illustrate such a separator embodying my improvements.

Figure I is an elevation in medial section, the adjustable portions of the apparatus beingshown in their mean positions. Figs.` II and III are respectively fragmentary plan views ofthe spraying device andthe drivingforks, and Fig. 1V is a fragmentary section on the line A A of Fig. I.

Throughout the drawings the same parts are indicated by the same referenceligures.

1 is a fixed casing inclosing the working parts of the machine and provided with the channels or gutters il and Z5, the upper gutter 2 to receive the first syrup and the lower gutter 3 to receive the second syrup. 'lllese gutters have, as shown, a falling gradient to ihei r respective outlets 2 and 3".

Al is a cylindrical rotating perforated sheetmetal casing or open-bottomeifl basket carried by a. number of T-burs from a helieal-armml steel casting 6, securely keyed to the main spindle 7, a perforated-curved plate 8 being employed to connect thebasket 4to the bars 5. 9 is a conical rotating perforated sheetmetal casing or open-bottomed basket earried from an armed steel casting 10, which is fitted on and adapted to slide axially on the cylindrical boss 6 of the casting G, the axial position of the conical basket relatively to the cylindrical basket being adjusted by the lock-nuts shown. The double thickness of the baskets, as shown in the drawings, represents the outer perforated metal and the innerlining of gauze, the latter being held in position by the rings shown.

shown, carried from the boss 12, which iits upon and is adapted to slide axially on the boss 10 of the casting 10, the axial position of the plate relatively to the conical basket beingl adjusted by the lock-nutsshown. A ring 13, which serves to hold the gauze lining, also serves, in conjunction with the adjustable plate 11, to form an annular passage of adjustable radial Width through which the A material has to pass downward and by which its descent may be controlled. It will be noticed that the plate 11, being carried from the boss 10', which carries the conical basket, moves with the latter once its relative position thereto is determined by adjusting the lock-nuts screwed on the boss lo. A further means of controlling thedeseent ofthe material is alforded by the combination of the cylindrical basket I1- and the conical basket S), adjustablerelatively thereto, as the descent of the material on the conical basket isassisted by centrifugal force, while the material on the cylindrical basket is not so iiupeller'l, and the elleetive area of the basket -l. can be decreased or increased, accordingly as more orless of it isoverlapped by the conical basket.

ll are driving-forks attached to tlleeonical basket il, tlleopenendsol' whichembraeetlic bars or arms 5, and so transmit the driving l'orco from the latlor lo tho conical basket.

IOO

,plate 19 may be adjusted as the conical basket is raised or lowered I carry it by means of adj usting-screws 21 and provide depending plates 22, which, in conjunction with the plate 23, form an adjustable side Wall for the gutter 2. The material after having passed down through the machine is received in av hopper 24, being'guided thereto by a conical guide 25. The second syrup is guided to the gutter 3 by the peripheral plate 2G.

The outer iixed casing 1 is provided with covers 27, and the upper conical portion 28 of the casing may be formed in halves with a suitable joint.

Vhen the material is first fed into the machine, its passage downward is facilitated by the propelling action of the helical arms of the casting 6. A section of these arms on* the line A A is shown in Fig. IV. It willbeseen that the action is continuous and unidirectional and that in the arrangement shown.

the passage of the material through the apparatus is at each point in its path assisted by gravity and that the material may be directly collected in a removable receptacle, which features very much facilitate the handling of the sugar.

Although I have described the machine` au open-bottomed rotating cylindrical basket,

open at top and bottom, forming a prolonga tion ol' the conical basket downward and carried from the same spindle; substantially as described and illustrated.

2. In combination; a xed outer casing provided with upper and lower gutters; a rotating conical basket, open at top and bottom and placed with its larger end lowermost; an open-bottomed rotating cylindrical basket overlapping thc lower end of the conical basket and carried from the Sallie spindle; and means for axially adjusting thc conical basket rela-tively to the cylindrical basket, so as piece secured to the said spindle; a second central armed piecefitting on the boss of the said first armed piece and axially adjustable thereon; and a conical basket, open at top and bottom, carried from the second central piece, so as to be adjustably overlapped by the cylindrical basket; substantially as described.

4.. In combination; arotatingconicalbasket open at top and bottom and placed with its larger end lowermost; an open-bottomed rotating cylindrical basket overlapping thc lower end of the conical basket; and a circular plate or diaphragm placed Within the conical basket; the three parts being axially adjustable relatively` to each other; substantially as described.

5. In combination with the spindle, the axiall y-ad j ustable conical basket, the cylindrical basket, and the circular diaphragm, a .central member secured to the spindle, the said member serving as the means for carrying the cylindrical basket forming the inlet for the material, and provided with helical arms to assist the descent of the latter; substantially as described and illustrated.

G. In combination; a 4fixed outer casing with gutters; a central spindle; a cylindrical open bottomed basket carried by an open framework from a central armed member secured to the said spindle; a conical basket open at top and bottom fitting within the cylindrical basket and carried fromA a second central armed piece fittingv and axially ad 4justable on the boss of the first central piece;

and a circular diaphragm placed within the conical basket and carried bya central picco fitting and axially adjustable on the boss of the second-mentioned central piece, so that the said diaphragm although partaking inthe movement of the conical basket'is axially adjustable with respect to the latterysubstantially as described and illustrated. l

7. In combination with the outer fixed casing, having the upper and lower gutters, and the rotating parts of the separator; the vertically-adjustablc deilecting-plate l!) carried by saidl casing and the depending plates 2:! attached to said plato 19; substantially as doscribed and illustrated. f

In testilnony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HERMAN DE VRIES ltOllll.

Witnesses:

llnNnmciL VAN, man .Msifllssx urn, AUGUST Sidlrnin'n Donn. 

